With the increasing consciousness of self health care, millions of Chinese people______ in a variety of daily physical exercises, ranging from traditional shadow boxing to modern aerobics Compete play share.
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He was a man of strong social________, who actively campaigned against poverty in all its form.
把机械能转换成液体压力能的装置是()
A. 动力装置
B. 执行装置
C. 控制调节装置
D. 辅助装置
课件中一次/二次压力控制气动回路中,( )将系统压力控制在安全值。
A. 溢流阀
B. 储气罐
C. 气动三联件
D. 单向阀
课件中一次/二次压力控制气动回路中,系统压力为( )输出的压力。
A. 溢流阀
B. 储气罐
C. 气动三联件(减压阀)
D. 单向阀